Office of the Prime Minister and Privy Council

The Office of the Prime Minister and Privy Council is a three-story sandstone building with Second Empire features, including mansard roofs and arched windows. The ornate stone facade houses the Prime Minister and senior government officials.

The building was completed in 1889 by architect Thomas Fuller as a federal office. It later became the headquarters of Canada's executive branch.

The building was long known as the Langevin Block, named after a French-Canadian politician. The name change in 2017 reflects Canada's evolving conversation about its past.

Located at 80 Wellington Street directly across from Parliament Hill, the building is easy to find in central Ottawa. The site is designed to function as part of the government district.

The sandstone used in the facade was quarried locally and reflects the craftsmanship of the late 1800s. This material choice was a deliberate expression of Canadian identity at the time.

Location: Ottawa

Inception: 1889

Architects: Thomas Fuller

Architectural style: Second Empire style

Made from material: sandstone

Part of: Sparks Street Heritage Conservation District

GPS coordinates: 45.42368,-75.69706

Latest update: December 7, 2025 19:29